Preferred FlexFit 110 User Manual

iv Specications
FlexFit – Linkageless Control – Revision 1.0
PREFERRED
UTILITIES MFG CORPORATION
Servo Setup Step 5 – Congure the Servos' Span by Seeking Limits
........................................................................................... 3-49
Servo Setup Troubleshooting ............................................................. 3-49
Commission Mode ...................................................................................... 3-50
Curve Points ................................................................................................ 3-50
Starting the Burner ...................................................................................... 3-50
Verifying Positions and Curve Points .......................................................... 3-50
Flame Scanner Tests ...................................................................................3-51
Pilot Test Hold .....................................................................................3-51
Pilot Flame Test (Non-DSI Burners) ....................................................3-51
Main Flame Test ................................................................................. 3-52
Pilot Turndown Test (Non-DSI Burners) ............................................. 3-52
Tuning the Burner ........................................................................................ 3-52
Fuel/Air Ratio Curves ......................................................................... 3-52
Entering Additional Curve Points ....................................................... 3-53
Low Fire, High Fire, Avoid Setpoint .................................................... 3-53
Verifying Curves .......................................................................................... 3-54
Tuning .......................................................................................................... 3-55
The Proportional Function .................................................................. 3-55
The Integral Function ......................................................................... 3-55
The Derivative Function ..................................................................... 3-55
Recommended Procedure for Tuning a PID Loop ............................. 3-55
General Steps for Tuning the FlexFit PID Loop ......................... 3-55
Documentation ............................................................................................ 3-56
Section 4 – Parameters 4-57
Introduction ................................................................................................. 4-60
Flame Safety ............................................................................................... 4-60
Flame Safety > Basic ......................................................................... 4-60
Flame Safety > Advanced ...................................................................4-61
Flame Safety > Flex Sequences ........................................................ 4-62
Gas Valve Leak Test Option ............................................................... 4-64
Timing Calculations ................................................................... 4-64
Fuel-Air ........................................................................................................ 4-66
Fuel-Air > FD VSD .............................................................................. 4-66
Fuel-Air > Aux 2 .................................................................................. 4-66
Fuel-Air > O2 Analyzer ....................................................................... 4-67
Fuel-Air > O2 Trim .............................................................................. 4-68
Fuel-Air > FGR ................................................................................... 4-69
Firing Rate .................................................................................................... 4-70
Firing Rate > Basic ..............................................................................4-70
Firing Rate > Tuning ............................................................................4-71
Firing Rate > 24 Hour Recycle ............................................................4-72
Firing Rate > Local/Remote Mode ......................................................4-72
Call for Heat (Option) .................................................................. 4-72
Firing Rate > LFH-DHW-Warm Standby .............................................4-75
Firing Rate > Cold Start Warmup ........................................................ 4-75
Firing Rate > Advanced ....................................................................... 4-76
Draft Control ................................................................................................. 4-77
Draft Control > Basic ........................................................................... 4-78
Draft Control > Tuning .........................................................................4-79
Draft Control > Options .......................................................................4-81
Button Sets ...................................................................................................4-81
Modbus ........................................................................................................ 4-82
Serial Number ............................................................................................. 4-82
Section 5 – Troubleshooting 5-83
General Troubleshooting Tips ..................................................................... 5-84
Lockout Data ............................................................................................... 5-86
I/O Data Display .......................................................................................... 5-86
Electrical Noise ........................................................................................... 5-86
"... Not at Position" Lockouts ....................................................................... 5-87
"... Not at Position" Lockout Exceptions ............................................. 5-87
Possible Reasons for a "... Not at Position" Lockout .......................... 5-87
ZP Oxygen Analyzer Troubleshooting ........................................................ 5-88
ZP Wet Measurement Vs. Dry Measurement .................................... 5-88
Normal Operating Values ................................................................... 5-88
Slow Response Time ......................................................................... 5-89
Reading is Lower than Expected ....................................................... 5-89
Reading is Higher than Expected ...................................................... 5-89
Cell Can't Reach Operating Temperature .......................................... 5-89
Low Calibration Gas Flow Rate .......................................................... 5-90
Detector Leak Test ............................................................................. 5-90
LCD Messages .............................................................................................5-91
Normal Operating Messages ..............................................................5-91
Curve Commissioning Error Messages ............................................. 5-93
Oxygen Cell Status and Messages .................................................... 5-94
Trip Messages .................................................................................... 5-96
General Alarm, Error & Warning Messages .....................................5-102
Common Problems & Solutions ................................................................. 5-104
Section A – Appendix A-105
Abbreviations Used in This Manual .......................................................... A-106
Terms and Denitions ................................................................................A-107
Parts List ................................................................................................... A-109
Parameter Documentation Sheet
Boiler Operating Data Sheet

Preferred FlexFit 110 Specifications

General

Brand	Preferred
Model	FlexFit 110
Category	Controller
Language	English